Portion of an upright vacuum cleaner



FIG. 1 is a front perspective view of a portion of an upright vacuum cleaner which embodies our design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The claimed design is defined by the solid lines and surface shading in FIGS. 1-8. 

The ornamental design for a portion of an upright vacuum cleaner, as shown and described. 